"When officers arrived there was a male victim in the vehicle," Burch told AL.com. "The female victim was on the phone (with 911) and said they had been robbed by two black female suspects who fled the scene."

Robert Perry, 66, has been identified as the deceased victim and is the stepfather of the female victim, whose name was not released.

The suspects' car got stuck as they were leaving the scene. A foot chase ensued before officers apprehended both Lindsay and Atkins, according to Burch.

When the gun was drawn, Burch said, it was pointed at the female victim. Perry grabbed it and told his step-daughter to run.

Burch said Perry was shot "at least one time" and would have more accurate information after the autopsy was complete.

The suspects followed the victims from a Walmart in an attempt to rob them.

There were initial reports of a third suspect. Burch told AL.com late Tuesday night "that was not the case."

"We set up a perimeter, used dogs and a helicopter and determined there was no third person," he said.

"It was two totally innocent victims. It's rare, No. 1, that we have a crime such as this involving females as the actors. From a public awareness, the fact that victims were being followed for that length of time ... reminds us to be mindful of our surroundings."